Carbureter.



w. P. HUGUELET.

GABBURETER.

APPLICATION FILED snr'r. 27, 1912 Patented Dec.9, 1913.

n u E w n n 3 a a moaeo w. P. HUG UELET.

CARBUBETER. APPLICATION FILED SEPT. 27, 1912.

Patented Dec. 9, 1913.

8 SHEETS-SHEET 2.

nvenbw Q W. P. HUGUELET.

GAHBURETER.

APPLICATION FILED SEPT.27,1012.

Patented Dc. 9. 1913.

3 SHEETS-SHEET 3,

q ii'neueo UNITED STATES PATENT OFFICE.

WILLIAM P. HUGUELET, OF CHICAGO, ILLINOIS, ASSIGNOiR, BY MESNEASIGNMENTS TO MUIR COMPANY, INCORPORATED, OF BALTIMORE, MARYLAND,CORPORATION OF DELAWARE.

CARBURETER.

Specification of Letters Patent.

Application filed September 27, 1912; Serial No, 722,580.

T 0 all whom. it may concern Be it known that I \VILLIAM l HUGUELET,citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Carburetors for Internal-Combustion Engines; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention has for its'object to pro vide an improved carbureter forinternal combustion engines, and consists in the features ofconstruction and combinations of parts hereinafter fully described andparticularly claimed.

In the accompanying drawings illustrating the invention: Figure 1 is a vew in side elevation of a carburetcr embodying my invention. Fig. -2- isa central vertical longitudinal section of the same. Fig. 3 is afragmentary detail section partly in elevation on the line 3-3 of Fig.-2. Fig. 4- is a fragmentary detail horizontal section on the line 44 ofFig. --1-. Fig. 5 is a fragmentary detail horizon tal section on theline 5-5 of Fig. -1-..

The invention relates particularly to that class of carbureters forinternal combustion motors in which the supply of hydro-carbon liquid iscontrolled by a valve and wherein means are provided for automaticallymechanically actuating said valve so that the supply of liquid may atall times be substantially properly proportioned to the volume of airpassing through the carbureter.

The proportions of air and hydro-carbon at which the greatestmotorefliciency is attained varies with the atmospheric conditions such ashumidity and temperature and is also dependent upon the specific gravityof the liquid and its freedom from water, It is desirable that thesevariations in conditions affecting motor efficiency may be readily met,and the object of my invention is to provide means whereby this may beaccomplished with the utmost ease and despatch.

The carbureter comprises the usual reservoir 1, sometimes also termedfloat chamber,

which is connected by means of the pipe 2 with a source of so pl ofhydrocarbon liquid, the latter being admitted to said chamber 1 throughthe. openin 3 in the bottom thereof which is contro ed by the valve 4.The latter is provided with ci a' stem 5 enlarged between its ends toprovide annular shoulders 6 and 7 respectively on 'said stem. Betweenthe shoulder 7 and the lower end of a hollow plug 8 through which theupper end portion of the valve stem 5 passes, a helical compression sring 9 is disposed which n01- mal'ly hol s said valve 4 on its seat. Thesaid plug 8 is disposed in the upper end of a tube 10 having anexternally threaded upper end portion which enters the flanged threadedopening 11 in the upper wall of said reservoir 1 and which at its lowerend is integral with the pairs of lugs 12 which are also integral withthe removable bottom 13 of said reservoir in which the opening 3 isprovided. Pivot-ally mounted between snidrespective pairs of lugs 12 arelevers 14 extending in diametrically opposite directions, and the innerends of which are adapted to engage the annular shoulder 6 at the lowerend of the enlarged portion of said valve stem 5. The othe and longerends of said levers 14 are d' sed in the path of the float 15 which isring shaped, and which, when it rests upon the outer ends of the levers14, causes the latter to turn on their pivots to raise the valve stem 5and thus open said valve 4 to admit hydr0- carbon liquid to saidreservoir 1. A plunger 16 which is normally supported at the upper limitof its movement by means of the spring '17 passes through an opening inthe upper wall of the reservoir 1 and may be depressed against action ofsaid spring 17 to forcibly depress the said float 15 when it is desiredto admit more than the normal quantity of hydro-carbon liquid to saidreservoir 1.

At one side of the reservoir 1 is a vertical cylindrical passage 18which connects with a lateral inlet 19 for air which is controlled bythe throttle valve 20 in' the usual manner. Projecting upwardly from thebottom of said chamber 18 is a discharge pipe 21 for the hydro-carbonliquid, the latter being connected by means of the-.horizontal-passage22 with the lower portion of the reservoir 1; The said discharge pipe 21extends to a point slightly'higher than the normal liquid level in thereservoir 1 and, upon the formation of a partial vacuum in the vicinityof the outlet end thereof, isadapted to discharge hydro-carbon liquidinto said passage 18. The latter connects by means of the inclinedpassage 23 with the passage 24 leading to the manifold or otherconnection with the suet-ionend of the engine c tor or cylinders, andwhich is controlled by the throttle valve 25 in the usual manner. At oneside of said passage 24 is an opening through which air is adapted to beadmitted theretofsaid opening bein controlled by the mushroom valve 25,t e stem 26 of which is horizontally disposed and passes at one endthrough 'a plug 27 disposed in the diametrically opposite wall of saidpassage 24. The said plug 27 is threaded 'insaid opening and between thesame and the valve 25 there is interposed a helical compression sprin 28which serves to maintain the valve 7 25 normally closed. The said plug27 may be turned to regulate the pressure exerted by said spring 28 onsaid valve in a well.- known manner. The said valve stem 26 alsoprojects beyond the other or front face of said valve 25 andpassesthrough a guide 5 eeve or flange 29 carried upon the spokes 3 ofthe plate 31 secured around the opening controlled by said valve 25; Theouter end portion 32 of said valve stem 26 is preferably rectangular incross-section and is provided with a longitudinal" slot 33 I in which acam member 34 is pivotally mounted. The said member 34 is provided atits outer end, that is, the end farthest removed from its pivot, with aninclined face or edge 35 which is adapted to be engaged by the inner endof a set screw 36. mounted in a threaded central opening in theouter endof the rectangular portion 32"of said valve stem 26 The said inclinedface 35- ofsaidcammember34 is adapted;to be supported at differentelevations uponQthe inner end portion of sa id set screw 36-,thuscausing the upper edge pr. face of said cam member to pro ect varyingdistances; above and at various inclinations relatively to the upperface of said portion 32 of said valve stem. On

the outer end of the latter there is providedan L-shaped projection 37to the outer end of which a flat spring 38 is secured, the said springbeing adapted a-t its free end to engage in the notches 39 of thehea'd40 of said set srrew 36 and tli us o tov prevent accidental rotation ofthe latter. A I Such accidental rotation. is further prevented bymeansof' the lock nut 41 in th usualand ivell -ltnown manner. The dischargeend of said discharge pipe 21 is controlled "by 'avalve 42, the stem ofwhich extends upwardly through the opening in'a plug "43 inounted in athreaded openingi'n the upper wallof the assage 18. The saidplug/carries an annuar flange 44 in the upper end of which a plug 45 ismounted ,and through which the stem of 'said valve 42 also passes. Onthe latter there is mounted a collar 4tivbetween spring 47 is disposedwhich serves to maintain the 'valve 42 normally at the lower limit ofits movement. Mounted upon the 7 upper end of the stem of said valve 42is a head 48 which is rectangular and is pro vided with a verticallydisposed rectangular slot 49 through which the rectangular outer endportion 32 of the valve stem 26 passes. In the upper end of said head 48there is mounted a set screw 50, the inner end of which bears upon theupper edge or face of the cam member 34 in vertical alineinent with thepivot thereof or upon the contiguous part of the upper face of the part32 of the valve stem, said set screw. being held against rotation bymeans of the flat sprin 5.1 in the usualmanner. By means of sai setscrew 50 the normal position of the valve 42 relatively to its seat isadjusted prefer-' ably to maintain said valve raised slightly off itsseat so that in startipg the motor and while the latter is running atlow speed 'a .sutlicieni quantity of hvro Carbon liquid may be fedthereto to permitoperation thereof.

It is \Yell-lmmvn that as the throttle valve 25 is opened the engine ormotor gains in speed and as it gains speed the partial vacuum formed inthe passage 24 will cause the v valve 25 to open, particularly the valve20 is partly closed. The degree or extent to which the said valve 25opens, depends, of:

vcourse, upon the degree of vacuum formed in said passage 24. Theopening movement ,of the valve will, of course, cause the inclined upperface or edge ofthecam member 34 to raise the set screw 50 and'therebythe In operation it is customary to fix the positionfof the valve 42 soas to accommodate ,the same to the needs of the motor in starting andrunning at its lowest speed so that after the said set screw 53 has beenonce adj'usted it is not afterward required to be again manipulatedexcept to the extent necessary totake up wear. The only other adjustnent required is to regulate the feed of the hydro-carbon liquid as themotor runs at higher speeds. This is accomplished by turning the'setscrew 36 more orless in either direction to adjust the inclination ofthe cam member 34 whereby the valve stem 42 will be given a longer orshorter stroke,

as may be desired.

I claim as my invention: I

1. In a carbureter, a carbureting passage having a primary air-inletport, a mixing passage off-set relatively to said carbureting passageand communicatin therewith, a fuel supply nozzle in said car uretingpassage, an auxiliary air-valve in the mixing paszle, the stems of saidvalves intersecting one another, and .co-actin interengaging means onsaid respective va ve-stem'a for transmitting movement from the airwalveto the nozzle valve.

2. In a carburetor, a carburetlng passage. having a primary air-inletport, a mixing 5 passage off-set relatively to said earbureting epassage and communicating therewith, a fuel supply nozzle in saidcarburcting passage,

an auxiliary air-valve in the mixing passage, 5

a valve controlling the, fuel supply nozzle, the stems of said valvesintersecting one another, and a cam-member carried by the airvalve stemand engaging the fuel valve'slem for transmitting movement of theairw'alve to the fuel valve.

3. In a carbureter, a carbureting passage having a primary air-inletport, a mixing passage off-set relatively to said carbureting passageand communicatin therewith, a. fuel supply nozzle in said car )uretingpassage, an auxiliary air-valve in the mixing passage, a valvecontrolling the fuel supply nozzle, the stems of said valvesintersecting one another, a cam-member carried by the air-valve stem andengaging the fuel valve'stem for I transmittin movement of the air-valveto z the fuel va ve, and means on. said air-valve stem for ad ustingsaid cam-member for 4. In a carbureter, a normally automatically closedfluid-pressure actuated reciprocable valve controlling an air-inletport, and havin a stem,-a projection on said stem external l y of thecarburetor housing havin an inclined face, means for adjusting saiprojection for varying the' cant of its in: clined face, a reciprocablevalve controlling the supply of hydrocarbon liquid and having a stemprovided with a longitudinal slot through which thestem of the air-inletvalve 5 passes and throu h which said projection travels, a part 0 saidstem of said valve l controlling the liquid supply disposed in the lpath of the inclined face of said projection for transmitting movementof the firstl named to the last-named valve.

I In testimony whereof I have signed my .name in presence of twosubscribing witnesses.

WILLIAM P. HUGUELET. 1 lVitnesses:

R. W. Lorz, Ecoexs H. HUGUELET.

I varying the throw of the said fuel valve. l

